Toyota Tacoma 2015-2018 Service Manual: Front Radar Sensor (C1A10)

C1A10 is output when there is an internal malfunction in the millimeter wave
radar sensor assembly.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

C1A10

Front Radar Sensor

While the vehicle speed is 36 km/h (22 mph) or more and the dynamic radar
cruise control system is operating, the internal malfunction of the millimeter
wave radar sensor assembly continues for 0.3 seconds or more.

Millimeter wave radar sensor assembly

Does not come on

CAUTION / NOTICE / HINT

NOTICE:

When replacing the millimeter wave radar sensor assembly, make sure
to replace it with a new one. If a device which was installed to another
vehicle is used, the information stored in the millimeter wave radar sensor
assembly will not match the information from the vehicle, and as a result,
a DTC may be stored.

When the millimeter wave radar sensor assembly is replaced with a new
one, adjustment of the radar sensor beam axis must be performed.

DESCRIPTION
When the system determines that the vehicle is driving straight ahead based on
signals from the yaw rate and acceleration sensor (airbag sensor assembly), etc.,
the millimeter wave ra ...

Other materials:

Clutch Switch Circuit
DESCRIPTION
While depressing the clutch pedal, the clutch start switch assembly sends a signal
to terminal MTN of the 4 wheel drive control ECU. While the signal is input, switching
between H4 and L4 is possible.
WIRING DIAGRAM
PROCEDURE
1.
READ VALUE USING TECHSTREA ...

Occupant Classification System Malfunction (B1650/32)
DESCRIPTION
The occupant classification system circuit consists of the airbag sensor assembly
and the occupant classification system.
When the airbag sensor assembly receives signals from the occupant detection
ECU, it determines whether or not the instrument panel passenger without door airba ...